My b2evolution Version: 2.x

Hello. I just upgraded to 2.0.2-alpha and I would like to use multiblogs.php as my index page.

When I rename 'multiblogs.php' to 'index.main.php' and place it into the 'Custom' skins folder, I get an error message. Is there something I am doing wrong, or is multiblogs.php just not ready for 2.0.2-alpha yet? (I figured it would be okay, since it came with the distribution?)

multiblogs.php works fine in my root directory, but if I want to use it as my actual index page I get the error.

HELP!
Thanks! :'(

1. Here is the default index.main.php: http://www.gravija.com/
2. Here is multiblogs.php working correctly in the root: http://www.gravija.com/multiblogs.php
So basically what I want is for the address http://www.gravija.com/ to be the multiblogs template (http://www.gravija.com/multiblogs.php)

Here is the error I get when I try to use multiblogs.php as index.main.php:

Warning: main(/home/gravija/public_html/skins/custom/conf/_config.php) [function.main]: failed to open stream: No such file or directory in /home/gravija/public_html/skins/custom/index.main.php on line 37

Fatal error: main() [function.require]: Failed opening required '/home/gravija/public_html/skins/custom/conf/_config.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/gravija/public_html/skins/custom/index.main.php on line 37